https://www.selleckchem.com/CDK.html atments. At both sampling times, an overall higher N accumulation in shoots and roots were detected when the inorganic N sources were applied to nutrient solutions (as ammonium or nitrate). 15N experiments indicated that in comparison to -N seedlings, urea fed seedlings showed an increase of N accumulation and data showed that ureic-N was taken up by seedlings in lower amounts than inorganic N-forms. Through EA-IRMS, ICP-OES and ICP-MS a multielemental composition of maize tissues was performed as well as gene expression analyses by Real-time RT-PCR that allowed to monitor the expression profile of genes most involved in urea and ammonium nutritional pathways.There had been an urgent call for the collection of standardized data describing clinical presentations, severity, outcomes, and epidemiology of COVID-19 by the World Health Organization (WHO). These data were expected to compliment the national pandemic data collated from countries by the World Health Organization (WHO). Nigeria, among other countries, is not an exception. This survey collected data on the respondent's knowledge on COVID-19, their attitude and practices towards the control of the spread of COVID-19 amongst Nigerians. The data were collected through an online survey. There were 1320 respondents from Nigeria that answered the survey questions. The survey was conducted between March 31 and April 28, 2020 which were within the lockdown period in the country. These data could serve as auxiliary information and/or research data for other researchers in Nigeria. It could also serve as guide or reference data to other researchers outside Nigeria who may be interested in carrying out similar research in another country.Understanding which trees farmers prefer, what determines their survival and enhancing farmer knowledge of tree management is key to increasing tree cover in agricultural landscapes. This article presents data on tree seedling survival under different